How to Change the Oil in a 2015 Honda CRF150F

Shop parts for a 2015 Honda CRF150F Dirt Bike.

Regular oil changes are essential for maximizing performance and longevity in your 2015 Honda CRF150F. This guide by MotoSport.com details every step, tool, and crucial model-specific tip you need for a straightforward, mess-free oil change tailored to your CRF150F.

Tools & Supplies Needed

  • 10mm or 12mm socket (verify your drain plug size before you start; most models use 17mm, but check yours)
  • Socket wrench
  • 24mm socket (for the oil filler cap, if needed)
  • Torque wrench
  • Oil catch pan
  • Clean funnel
  • Rags or shop towels
  • Aluminum foil (optional, to line the frame and avoid spills)
  • Skid plate removal tool (if your bike has a skid plate)
  • New engine oil (approximately 1.1 quart, 10W-30 or 10W-40 per manufacturer specs for most conditions)
  • Gloves (optional but recommended)

Step-by-Step Oil Change Instructions

  1. Warm Up the Bike
    • Let your 2015 CRF150F run for 2–3 minutes to warm the engine oil, making it easier to drain completely.
    • Shut off the engine and place the bike on a stand for stability.
  2. Remove the Skid Plate (if equipped)
    • Use the appropriate socket or Allen wrench to remove the skid plate bolts.
    • Set the skid plate aside.
  3. Locate and Remove the Oil Drain Bolt
    • The drain bolt is typically located on the bottom left side of the engine, beneath the crankcase.
    • Place your oil catch pan directly under the drain bolt.
    • Use your socket wrench to unscrew the drain bolt and let the oil flow out.
    • Allow several minutes for the oil to drain fully.
  4. Inspect and Clean the Drain Bolt
    • Check the drain bolt and washer for damage or debris.
    • Wipe away any sludge or metal particles.
  5. Reinstall the Drain Bolt
    • Thread the drain bolt in by hand to avoid cross-threading.
    • Using a torque wrench, tighten the bolt to 11 foot-pounds as recommended for the CRF150F.
  6. Access and Clean the Oil Screen (if applicable)
    • The 2015 CRF150F uses a mesh oil filter (screen) you can clean and reuse; however, some models do not have an external oil filter. Consult your owner's manual and check during removal. If your bike has one:
    • Remove it carefully, clean with degreaser or solvent, and let it dry completely before reinstalling.
  7. Refill with New Oil
    • Unscrew the oil filler cap, usually found behind the kick starter on the right-hand side.
    • Place a funnel into the fill hole and pour in about 1.1 quart (1.04 liters) of fresh 10W-30 or 10W-40 motorcycle oil. Always use oil certified for wet clutches.
    • Avoid overfilling; check oil level gradually.
  8. Check Oil Level
    • Remove the dipstick and wipe it clean. For accuracy, place the dipstick into the fill hole without screwing it in, then check the oil level. (Some older models require screwing in the dipstick to check, but for 2015 just rest it in the threads.)
    • Ensure the oil level is between the lower and upper marks on the dipstick.
    • Add oil if needed, then replace and tighten the filler cap.
  9. Reinstall the Skid Plate
    • If removed earlier, reinstall the skid plate securely.
  10. Final Checks
    • Start the bike and let it idle for 1–2 minutes, then shut it off and recheck the oil level after a few minutes.
    • Look for oil leaks at the drain bolt and fill cap.
    • Properly dispose of the used oil at a recycling facility.

Key Call-Outs for the 2015 CRF150F

  • No cartridge oil filter: The 2015 CRF150F uses a reusable mesh oil screen. Clean it each change if accessible; otherwise, follow your service manual's guidance for screen cleaning intervals. You don’t need to buy a replacement oil filter for normal changes.
  • Dipstick check: Unlike some other bikes, when checking the oil, rest the dipstick into the threads without screwing it in to get an accurate reading for the 2015 model.
  • Drain bolt torque: Overtightening can easily strip the threads in the aluminum case. Always torque to 11 ft-lb.
  • Oil type: Use only oil designed for motorcycles with wet clutches. 10W-30 is standard, but 10W-40 can be used in hotter climates and off-road use. Never use automotive oil with friction modifiers.
  • Oil quantity: Add about 1.1 quarts; never fill above the upper dipstick line or you risk engine damage.
  • Skid plate removal: Accessing the drain bolt is much easier if you remove the skid plate. If you ride without a plate, this step may not be necessary.
  • Thread care: If you ever strip the oil drain bolt threads, the repair may involve using a helicoil or similar insert—never force the bolt.

Follow these steps for every oil change to keep your Honda CRF150F running smoothly and dependably on every ride. Consult your owner’s manual for interval recommendations and never ride with dirty or low oil—protect your engine the right way, every time. For all your tool and oil needs, trust MotoSport.com for expert gear and support.

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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.